1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Flauer [41]
3 years ago
6

Explain the part that the subduction zones play in the cycling of matter between Earth’s crust and mantle.

Chemistry
1 answer:
WARRIOR [948]3 years ago
8 0

Explanation:

The earth’s crust is broken into separate pieces called tectonic plates (Fig. 7.14). Recall that the crust is the solid, rocky, outer shell of the planet. It is composed of two distinctly different types of material: the less-dense continental crust and the more-dense oceanic crust. Both types of crust rest atop solid, upper mantle material. The upper mantle, in turn, floats on a denser layer of lower mantle that is much like thick molten tar.

Each tectonic plate is free-floating and can move independently. Earthquakes and volcanoes are the direct result of the movement of tectonic plates at fault lines. The term fault is used to describe the boundary between tectonic plates. Most of the earthquakes and volcanoes around the Pacific ocean basin—a pattern known as the “ring of fire”—are due to the movement of tectonic plates in this region. Other observable results of short-term plate movement include the gradual widening of the Great Rift lakes in eastern Africa and the rising of the Himalayan Mountain range. The motion of plates can be described in four general patterns:

<p><strong>Fig 7.15.</strong> Diagram of the motion of plates</p>

Collision: when two continental plates are shoved together

Subduction: when one plate plunges beneath another (Fig. 7.15)

Spreading: when two plates are pushed apart (Fig. 7.15)

Transform faulting: when two plates slide past each other (Fig. 7.15)

The rise of the Himalayan Mountain range is due to an ongoing collision of the Indian plate with the Eurasian plate. Earthquakes in California are due to transform fault motion.

Geologists have hypothesized that the movement of tectonic plates is related to convection currents in the earth’s mantle. Convection currents describe the rising, spread, and sinking of gas, liquid, or molten material caused by the application of heat. An example of convection current is shown in Fig. 7.16. Inside a beaker, hot water rises at the point where heat is applied. The hot water moves to the surface, then spreads out and cools. Cooler water sinks to the bottom.

<p><strong>Fig. 7.16.</strong> In this diagram of convection currents in a beaker of liquid, the red arrows represent liquid that is heated by the flame and rises to the surface. At the surface, the liquid cools, and sinks back down (blue arrows).</p><br />

Earth’s solid crust acts as a heat insulator for the hot interior of the planet. Magma is the molten rock below the crust, in the mantle. Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up the earth’s crust.

You might be interested in
How long does it take Earth to make one revolution?
andrew11 [14]

Answer:

365 days and five hours

8 0
2 years ago
Read 2 more answers
The nucleus contains positively charged ___ and neutral ___ and makes up more than 99% of the mass of an atom.
Mashcka [7]

Answer:

ions

Explanation:

atoms because of the charge

5 0
3 years ago
19. What is sthe mass of 6.02 x 1024 atoms
alekssr [168]

The mass of magnesium in 6.02 \times 10^{24} atoms is 240 g.

Answer: Option A

<u>Explanation:</u>

First, we have to convert the atoms to moles of magnesium.

We know that 6.02 \times 10^{24} atoms are present in 1 mole of magnesium. So,

    \text { 1 atom }=\frac{1}{6.02 \times 10^{24}} \text { moles }

    6.02 \times 10^{24} \text { atoms }=\frac{6.02 \times 10^{24}}{6.02 \times 10^{23}} \text { moles }=10 \text { moles }

Thus,

     Mass of M g= molar mass of M g \times No. of moles of M g

     \text { Mass of } M g=24 \times 10=240 g

Thus, 240 g of Magnesium is present in 6.02 \times 10^{24} atoms.

4 0
3 years ago
How many different chlorinated products
valentina_108 [34]

Answer: if I’m not mistaken it would be 8

Explanation:

3 0
2 years ago
For the reversible, one-step reaction A+B&lt;----&gt;C+D, the forward rate constant is 52.4 /mol*h and the rate constant for the
Fantom [35]

Answer:

—-—1———————-s

7 0
3 years ago
Other questions:
  • What organelle stores water,food, or waste
    8·1 answer
  • How do ocean currents (specifically ocean gyres) impact climate
    7·2 answers
  • Balancing Chemical Equations
    6·1 answer
  • In a closed system, how will a decrease in pressure affect the following reaction: N2O4(g) ⇌ 2NO2(g)?
    10·1 answer
  • What tests can you do to identify gases, based on their chemical properties?
    13·1 answer
  • 3.Write the chemical equation for the reaction when methane burns in (2) (a) Sufficient supply of oxygen (b) Insufficient supply
    14·1 answer
  • Using the model for the formation of Scandium Fluoride (an ionic compound), write the chemical formula.
    10·1 answer
  • Select the correct answer.
    7·2 answers
  • Is state change physical or chemical? Explain how you know.​
    12·1 answer
  • Energy and Temperature Activity Worksheet
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!